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The Apache Cassandra Project develops a highly scalable second-generation distributed database, bringing together Dynamo's fully distributed design and Bigtable's ColumnFamily-based data model.

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/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.apache.cassandra.repair.messages;

import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import java.util.Objects;

import org.apache.cassandra.db.TypeSizes;
import org.apache.cassandra.io.IVersionedSerializer;
import org.apache.cassandra.io.util.DataInputPlus;
import org.apache.cassandra.io.util.DataOutputPlus;
import org.apache.cassandra.locator.InetAddressAndPort;
import org.apache.cassandra.repair.SyncNodePair;
import org.apache.cassandra.repair.RepairJobDesc;
import org.apache.cassandra.streaming.SessionSummary;

/**
 *
 * @since 2.0
 */
public class SyncResponse extends RepairMessage
{
    /** nodes that involved in this sync */
    public final SyncNodePair nodes;
    /** true if sync success, false otherwise */
    public final boolean success;

    public final List summaries;

    public SyncResponse(RepairJobDesc desc, SyncNodePair nodes, boolean success, List summaries)
    {
        super(desc);
        this.nodes = nodes;
        this.success = success;
        this.summaries = summaries;
    }

    public SyncResponse(RepairJobDesc desc, InetAddressAndPort endpoint1, InetAddressAndPort endpoint2, boolean success, List summaries)
    {
        super(desc);
        this.summaries = summaries;
        this.nodes = new SyncNodePair(endpoint1, endpoint2);
        this.success = success;
    }

    @Override
    public boolean equals(Object o)
    {
        if (!(o instanceof SyncResponse))
            return false;
        SyncResponse other = (SyncResponse)o;
        return desc.equals(other.desc) &&
               success == other.success &&
               nodes.equals(other.nodes) &&
               summaries.equals(other.summaries);
    }

    @Override
    public int hashCode()
    {
        return Objects.hash(desc, success, nodes, summaries);
    }

    public static final IVersionedSerializer serializer = new IVersionedSerializer()
    {
        public void serialize(SyncResponse message, DataOutputPlus out, int version) throws IOException
        {
            RepairJobDesc.serializer.serialize(message.desc, out, version);
            SyncNodePair.serializer.serialize(message.nodes, out, version);
            out.writeBoolean(message.success);

            out.writeInt(message.summaries.size());
            for (SessionSummary summary: message.summaries)
            {
                SessionSummary.serializer.serialize(summary, out, version);
            }
        }

        public SyncResponse deserialize(DataInputPlus in, int version) throws IOException
        {
            RepairJobDesc desc = RepairJobDesc.serializer.deserialize(in, version);
            SyncNodePair nodes = SyncNodePair.serializer.deserialize(in, version);
            boolean success = in.readBoolean();

            int numSummaries = in.readInt();
            List summaries = new ArrayList<>(numSummaries);
            for (int i=0; i